Today, GSLV To Carry A Satellite And India's Hopes For Moon Mission

[ito]

NEW DELHI: Countdown for the Indian Space Research Organisation's big launch has started at Sriharikota. An indigenous weather satellite - the INSAT 3DR -- is set to begin its journey tomorrow afternoon, piggybacking on the GSLV. But more than the satellite, it is the flight of GSLV that will be crucial for India.

Here are the Top 10 points to this big science story

1. The lift-off will take place at 4.10 pm from the launch pad at Sriharikota, Andhra Pradesh.
2. The success of GSLV (Geo-synchronous Satellite Launch Vehicle) is crucial for India since it will be the vehicle to launch the second mission to the moon -- Chandrayaan-2 -- next year.
3. A successful launch will also boost India's efforts to make a dent in the multi-billion dollar commercial space launcher market.
4. The 415-tonne GSLV rocket, with its indigenous cryogenic engine, is being tested for the tenth time. This is its first operational launch.
5. Dubbed the "naughty boy," this rocket has had a patchy record, with five of its nine flights resulting in failure.
6. The rocket is almost 49 meters high -- as much as a 17-floor building. It weighs 415 tons -- as much as the combined weight of 80 full grown elephants.
7. Rocket launches are still a very risky business, which became evident when the Falcon- 9 rocket by Space-X exploded on a launch pad in USA on September 1. Space-X a private company is owned by billionaire Ellon Musk, which is now experimenting with cheaper space launches.
8. The GSLV will be carrying the 2211-kg INSAT 3DR, which will eventually be placed in a geo-synchronous orbit 36,000 km above Earth.
9. What makes the INSAT 3DR special is its imaging capabilities for night-time pictures. It also carries on board a special search and rescue transponder, which will help in satellite-aided rescue operations.
10. Together, they represent an expenditure of Rs. 300 crore.

http://www.ndtv.com/cheat-sheet/tod...or-moon-mission-1455871?pfrom=home-topstories

 

[Skull and Bones]

Hoping for the best.

 

[Mrc]

I wish you well on this (as this is a peacefull endeavor)

 

[ashok321]

Indigenous GSLV engine faces key test, to propel rocket with heavy payload on Sept 7

http://timesofindia.indiatimes.com/...vy-payload-on-Sept-7/articleshow/54039419.cms


CHENNAI: Riding high on two previous successful GSLV flights powered by indigenously-developed engine, India's cryogenic technology will go through another litmus test when it propels a GSLV rocket with one of the heaviest satellites in the INSAT/GSAT series on Thursday evening.

After three developmental flights, Isro scientists are now confident about the technology since they have declared Thursday's launch as the first operational flight with the indigenous cryogenic engine. GSLV is a three-stage launch vehicle and a cryogenic engine is used in the third or upper stage. A 2,211kg INSAT-3DR, an advanced weather satellite, will take-off on board GSLV-F05 from the Sriharikota spaceport.

"When we build a new rocket, we do a developmental flight to ascertain if it will work properly. Once we are confident, we call it an operational flight which will be considered a routine launch," an Isro scientist said. "GSLV-F05 will place the satellite in the geostationary transfer orbit from where the satellite with its propellant will raise to its final geostationary orbit," he said.


Cryogenic engines use liquid hydrogen as fuel and liquid oxygen as oxidizer to burn the fuel. It can produce 1.5 times the thrust compared to liquid rocket engines.


After a decade of development and flawless tests, the maiden developmental flight of the indigenous engine conducted on April 15, 2010 did not succeed. The GSLV, carrying a 2,220kg a communication satellite, plunged into the Bay of Bengal after take-off. The turbo pump supplying fuel to the engine had stopped. Critical modifications were made to the engine and the rocket before its first successful flight in 2014 and in 2015.



The development of indigenous cryogenic engines comes after all the Russia-supplied engines were used. These engines are essential to put satellites in geostationary orbit, but the technology - to burn a super-cooled fuel at extremely high temperatures - was sophisticated. Isro had to develop a material that could withstand high temperature and pressure during combustion.

 

[livingdead]

this is the real deal.. hope it goes as per plan.

 

[Mrc]

Peaceful endeavor? Check the purpose of the payload, night time photography. These Indians do nothing for peace. Even their peaceful endeavors are obsessed with us.

Oh well ... what can i say than...

 

[ito]

This mission can be instrumental in Moon rover mission and also to put man in the Space. Hoping for the best.

 

[911]

Good luck ISRO.

 

[gslv mk3]

Peaceful endeavor? Check the purpose of the payload, night time photography.

It's a meteorology satellite doofus. And it will be placed in the geostationary orbit.

 

[Skull and Bones]

This mission can be instrumental in Moon rover mission and also to put man in the Space. Hoping for the best.

GSLV has to demonstrate a reliability close to our PSLV to even be remotely considered for manned missions.

 

[Ankit Kumar 002]

Peaceful endeavor? Check the purpose of the payload, night time photography. These Indians do nothing for peace. Even their peaceful endeavors are obsessed with us.

Its primarily a " Weather Satellite " , with ability to aid SAR with its imagery.
It will provide meteorological services to India using a 6-channel imager and a 19-channel sounder, as well as search and rescue information and message relay for terrestrial data collection platforms.

 

[gslv mk3]

GSLV has to demonstrate a reliability close to our PSLV to even be remotely considered for manned missions.

The human rated launch vehicle would be GSLV Mark III.

 

[Skull and Bones]

The human rated launch vehicle would be GSLV Mark III.

BDW, when is the launch?

 

[911]

BDW, when is the launch?

4:10 pm todays launch right?

The human rated launch vehicle would be GSLV Mark III.

You look fan of GSLV MK3 . How much difference is between the one used today and that?

 

[gslv mk3]

BDW, when is the launch?

No timelines have been given by ISRO yet. We can expect it beyond 2020.

BTW they have conceptualized another two stage to orbit LV, with a 5X Semi-cryogenic engine as first stage, which can be used for manned space missions.

You look fan of GSLV MK3 . How much difference is between the one used today and that?

Totally different. The original GSLV was designed on the basis of pslv to reduce development time. But the cryogenic engine saga effed everything up. There are some limitations due to technological constraints which existed back then- such as a solid core with liquid strapons..

GSLV Mark3 has 3 stages-

Stage 0- solid fuel S200 boosters with 207 tonne propellent loading each.

Stage 1- hypergolic L110 stage with 2 X Vikas engine (will be replaced by a Semi-cryogenic S200 stage in the future)

Stage 2- Cryogenic C25 with a single CE 20 engine, 200 kN thrust (the propellent loading will be increased to 27 tonnes after a few launches)

Initially it can launch 3.5 tonnes to GTO & would be upgraded to above 4 tonnes after development flights. If we can master restart capability for the upper stage cryo, the payload can go up to 5 tonnes by employing a two-burn flight regime.

Semi-cryo engine would take this up to 6-7.5 tonnes.